CN216969112U - Electric aluminum capable of high-speed gold stamping - Google Patents
Electric aluminum capable of high-speed gold stamping Download PDFInfo
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- CN216969112U CN216969112U CN202220068823.8U CN202220068823U CN216969112U CN 216969112 U CN216969112 U CN 216969112U CN 202220068823 U CN202220068823 U CN 202220068823U CN 216969112 U CN216969112 U CN 216969112U
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Abstract
The application discloses but high speed gilt electrochemical aluminium, this electrochemical aluminium includes base film layer, from type layer, image layer, coating film layer and glue film. The image layer comprises a first color layer, a toughening layer and a second color layer which are sequentially stacked; one sides of the first color layer, the toughening layer and the second color layer, which are close to the coating layer, are provided with microstructures capable of displaying holographic patterns under the action of the coating layer; the first color layer, the toughening layer and the second color layer form an image layer with a sandwich structure, the toughening layer arranged between the first color layer and the second color layer is used for improving the flexibility of the image layer, and buffer thermal stress is provided for the first color layer and the second color layer in the heating and pressing process of the alumite; the utility model compensates the product defect caused by the insufficient performance of the glue layer by regulating and controlling the structure of the image layer, solves the phenomenon of pocking mark or leakage point in high-speed hot stamping, and can reach the standard of high-speed hot stamping under the condition of glue with slightly low use performance.
Description
Technical Field
The application relates to the technical field of anti-counterfeiting, in particular to high-speed gilding electrochemical aluminum.
Background
The alumite is a hot stamping material made by coating and vacuum evaporation plating a layer of metal foil on a film base. Fig. 1 is a schematic diagram of a conventional structure of an electrochemical aluminum foil, in which a release layer, a color layer, and a glue layer are coated on a base film, and metal is evaporated in vacuum, followed by coating. The manufacturing process generally comprises the following steps: coating release resin on the base film PET and drying to form a release layer so as to enable the release layer to be easily separated after gold stamping; coating a layer of resin (such as acrylic resin) which is diluted by a solvent and mixed with a dye, drying to form a color layer, and forming a special holographic anti-counterfeiting pattern on the color layer through mould pressing; vacuum evaporating an aluminum layer with the thickness of nanometer level on the color layer to enhance the apparent brightness of the aluminum layer to form a coating layer; and coating a layer of glue diluted by a solvent, and drying to form a glue layer so that the gold stamped layer has adhesiveness.
At present, high-speed gold stamping usually adopts a round-to-round mode, and benefits brought to the printing industry are mainly to improve production efficiency and benefits in the aspect of environmental protection. Because the rolling speed of the roller in the round-pressing round high-speed gold stamping process is high, the pressure action mode is a high-speed line contact with the speed of the vehicle close to 110 m/min. Compared with the conventional flat-pressing flat-stamping mode, the round-pressing round high-speed hot stamping has shorter gold stamping contact time, has higher requirement on the heat conduction performance of a gold stamping material under the same pressure effect, and has smaller stripping force, lower stamping temperature and stronger adhesive force of the alumite. Therefore, in the key point of the conventional high-speed gold stamping process, the glue layer is the key point for solving the high-speed gold stamping. Generally, it is required that the glue has a low softening point, a uniform molecular weight, good heat transfer and good adhesion. In the process of designing the softening point of the glue, if the softening point of the glue is lower, the product is easy to be anti-sticky at normal temperature; and the softening point of the glue is designed to be higher, so that the problems of pockmarks or leakage points and the like are easy to occur in high-speed hot stamping.
The applicant finds out through research that the main reason for the phenomena of pockmarks and missed burning is that the imaging resin of the color layer is generally hard and brittle; after high-speed gold stamping is stressed and heated, the stress of the reversely-pulled image layer is uneven due to uneven heating of the glue, and local structure damage is caused to generate pits due to insufficient toughness of resin in the image layer. Therefore, the reasonable design of the color layer also has obvious influence on the improvement of the high-speed hot stamping performance.
SUMMERY OF THE UTILITY MODEL
The utility model provides an alumite capable of high-speed gold stamping, aiming at solving the problem that pockmarks or missing spots are easy to appear on a color layer of the conventional alumite after being stressed and heated in high-speed gold stamping.
In order to achieve the above object, according to one aspect of the present invention, there is provided an alumite capable of high-speed gold stamping, comprising a base film layer, a release layer, an image layer, a coating layer and a glue layer, wherein the image layer comprises a first color layer, a toughening layer and a second color layer, which are sequentially stacked;
one side of the first color layer, the toughening layer and the second color layer, which is close to the film coating layer, is provided with a microstructure capable of displaying holographic patterns under the action of the film coating layer;
this first chromatograph, toughening layer and second chromatograph constitute the image layer that has the sandwich structure, set up between first chromatograph and second chromatograph toughening layer is used for promoting the pliability on image layer, provides buffering thermal stress for first chromatograph and second chromatograph in the pressurized process that is heated at electrochemical aluminium.
Preferably, the thickness ratio of the first color layer, the toughening layer and the second color layer is (1.5-2.5) to 1: (1.5-2.5).
Preferably, the coating layer of the alumite capable of gold stamping at high speed is a metal aluminum layer or a dielectric layer;
the aluminum value thickness of the metal aluminum layer is 300-500 angstrom meters.
Preferably, the stripping value of the base film layer when separating the release layer, the image layer, the coating layer and the glue layer is 2.4-4N/m.
Preferably, the base film layer of the high-speed gold-stamping alumite is a PET film with the thickness of 12-18 μm.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
according to the high-speed hot stamping alumite provided by the utility model, the first color layer, the toughening layer and the second color layer form the image layer with a sandwich structure, the toughening layer arranged between the first color layer and the second color layer is used for improving the flexibility of the whole image layer, and the first color layer and the second color layer are provided with buffer thermal stress in the heating and pressing process of the alumite, so that the problem that the image layer is subjected to reactive action after the adhesive layer is heated unevenly to generate brittle cracked pockmarks or hot stamping leakage points is avoided. By adopting the image layer structure provided by the utility model, the standard of high-speed gold stamping can be achieved without adjusting the formula of the glue.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional structure of an electrochemical aluminum foil;
fig. 2 is a schematic view of a composition structure of an alumite capable of high-speed gold stamping provided in this embodiment;
fig. 3 is a schematic diagram of a method for preparing high-speed gold-stamping alumite according to this embodiment.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The terms "first," "second," "third," and the like in the description and claims of this application and in the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
In other instances, well-known or widely used techniques, elements, structures and processes may not have been described or shown in detail to avoid obscuring the understanding of the present invention by the skilled artisan. Although the drawings represent exemplary embodiments of the present invention, the drawings are not necessarily to scale and certain features may be exaggerated or omitted in order to better illustrate and explain the present invention.
Fig. 2 is a schematic diagram of a composition structure of the high-speed hot stamping alumite provided in this embodiment, and as shown in fig. 2, the high-speed hot stamping alumite includes a base film layer 1, a release layer 2, an image layer 3, a coating layer 4 and an adhesive layer 5, which are sequentially stacked, where the image layer 4 includes a first color layer 6, a toughening layer 7 and a second color layer 8;
the side of the first color layer 6, the toughening layer 7 and the second color layer 8 close to the coating layer 4 is provided with a microstructure (not shown in the figure) capable of displaying a holographic pattern under the action of the coating layer 4; this first colour layer 6, toughening layer 7 and second colour layer 8 constitute the image layer 3 that has "sandwich" structure, set up between first colour layer 6 and second colour layer 8 toughening layer 7 is used for promoting the pliability of whole image layer 3, provides buffering thermal stress for first colour layer 6 and second colour layer 7 in electrochemical aluminium receives the heat compression process.
In order to pursue good edge-cutting properties, the image layer 3 generally has a hard and brittle character; however, in the high-speed gold stamping process, the alumite easily causes uneven heating of the adhesive layer 5 in the process of being pressed and heated, and then causes uneven stress on the image layer 3, so that the original structure of the hard and brittle image layer 3 is damaged in the process of shrinking, and the problem of pockmarks or gold stamping missing points is caused. According to the scheme, the toughening layer 7 is added into the image layer 3, the toughening layer 7 has the characteristics of softness and toughness, the defects of hardness and brittleness of the color layer can be overcome, the effect of buffering stress is achieved in the high-speed gold stamping process, and the phenomenon that the structure of the color layer is damaged due to uneven heating of the adhesive layer is avoided. Therefore, the flexibility of the image layer 3 can deal with the problem that the adhesive layer 5 reacts to the image layer 3 after being heated unevenly, so that the image layer 3 is cracked to generate pockmarks or missing spots.
The embodiment provides an image layer 3 with a sandwich structure, wherein the affinity between the first color layer 6 and the release layer 2 is strong, so that the first color layer 6 can be uniformly coated on the surface of the release layer 2 and can be effectively separated from the release layer 2 during gold stamping. Therefore, the problem of affinity between the toughening layer and the release layer does not need to be considered when the toughening layer is designed. In addition, the first color layer 6 exposed to the surface does not have a significant variation difference in visual appearance of the alumite after peeling off the release layer 2 during the use of the alumite. The middle toughening layer 7 mainly plays a role of buffering sponge, and the generated buffering thermal stress can effectively avoid the phenomenon that the first color layer 6 and the second color layer 7 on two sides are structurally damaged to generate pits due to the self hardness and brittleness. The second color layer 7 is directly contacted with the pattern nickel plate in a matching way in the process of forming the microstructure by mould pressing, so that the problems of color loss, plate sticking and the like of the toughening layer in the mould pressing process can be avoided. The affinity between the second color layer 7 and the coating layer 4 is strong, so that the effect of uniform evaporation can be achieved in the coating process, and the affinity between the toughening layer and the coating layer 4 is not required to be considered when the toughening layer is designed.
In an alternative example, the thickness ratio of the first color layer 6, the toughening layer 7 and the second color layer 8 is (1.5-2.5): 1: (1.5-2.5).
By adopting the image layer structure provided by the embodiment, the standard of high-speed gold stamping can be achieved under the condition that the performance of the glue is slightly poor (for example, the performance does not reach the standard due to the existence of pockmarks after a finished product is processed).
In this embodiment, the base film layer 1 is a PET film with a thickness of 12-18 μm.
The release layer 2 is solvent wax coated on the PET film; in one specific example, the formulation of the release layer 2 is: 1 part of solvent wax and 15 parts of solvent; the solvent can adopt toluene, butanone or a mixture of the two.
In an alternative embodiment, the first color layer 6 and the second color layer 8 are formed by mixing cellulose acetate propionate and methyl methacrylate homopolymer; the mass ratio of the cellulose acetate propionate to the methyl methacrylate homopolymer is (4-8): (6-12).
In another alternative embodiment, the first color layer 6 and the second color layer 8 are formed by mixing cellulose acetate propionate, methyl methacrylate homopolymer and toner; the mass ratio of the cellulose acetate propionate to the methyl methacrylate homopolymer to the toner is (4-8): (6-12): (2-4).
In a specific example, the first color layer 6 and the second color layer 7 are formulated as follows:
4-8 parts of cellulose acetate propionate
6-12 parts of methyl methacrylate homopolymer
40-90 parts of solvent
2-4 parts of toner
0.2-0.4 part of assistant.
The cellulose acetate propionate has a softening temperature of 190 ℃ and 200 ℃ and a molecular weight of 3-4 ten thousand. The softening temperature of the methyl methacrylate-butyl methacrylate copolymer is 160-170 ℃, and the molecular weight is 5-15 ten thousand.
The solvent can be ethyl acetate or butanone; the auxiliary agent is generally an antifoaming agent and a leveling agent, and the main components of the auxiliary agent and the leveling agent are modified siloxane.
In the embodiment, the formula and/or the thickness of the release layer 2 and the first color layer 6 are/is adjusted, so that the peeling value of the base film layer 1 when the release layer 2, the image layer 3, the coating layer 4 and the adhesive layer 5 are separated is 2.4-4N/m, and the base film layer 1 is easy to peel from the surface of the image layer 3 through the release layer 2 in the use process of the alumite.
In an optional embodiment, the toughening layer is formed by mixing a methyl methacrylate-butyl methacrylate copolymer with a softening temperature of 160-170 ℃, a methyl methacrylate-ethyl acrylate copolymer with a softening temperature of 130-140 ℃ and graphene oxide; the mass ratio of the methyl methacrylate-butyl methacrylate copolymer to the methyl methacrylate-ethyl acrylate copolymer to the graphene oxide is (5-10): (2-5): (0.1-0.2).
In the toughening layer, the methyl methacrylate-ethyl acrylate copolymer and the methyl methacrylate-butyl methacrylate copolymer soft resin are used as main framework, and the graphene oxide mainly plays a role in strengthening toughness; the graphene oxide is a micro-nano carbon structure material with numerous oxidation functional groups on the edge, the oxidation functional groups enable the graphene oxide to be easily dispersed with a resin structure in a solvent uniformly, and the micro-nano carbon structure of the graphene oxide can enter gaps of main resin to play a toughening role.
In one specific example, the specific formulation of the toughening layer is:
5-10 parts of methyl methacrylate-butyl methacrylate copolymer
2-5 parts of methyl methacrylate-ethyl acrylate copolymer
0.1-0.2 part of graphene oxide dispersion liquid
70-90 parts of solvent
0.2-0.4 part of assistant.
Wherein the softening temperature of the methyl methacrylate-butyl methacrylate copolymer is 160-170 ℃, and the molecular weight is 5-15 ten thousand; the softening temperature of the methyl methacrylate-ethyl acrylate copolymer is 130-140 ℃, and the molecular weight is 5-15 ten thousand; the graphene oxide is industrial-grade graphene oxide, the purity is 95%, and the thickness is about 1 nm. According to the weight ratio of graphene oxide: butanone is mixed in a mass ratio of 1:99, and then a dispersion is obtained by mechanical stirring. The flexibility of the toughening layer is regulated and controlled through the softening temperature and the molecular weight of the methyl methacrylate-butyl methacrylate copolymer and the methyl methacrylate-ethyl acrylate copolymer.
The solvent can be ethyl acetate or butanone; the auxiliary agent is generally an antifoaming agent and a leveling agent, and the main components of the auxiliary agent and the leveling agent are modified siloxane.
Adding a methyl methacrylate-butyl methacrylate copolymer, a methyl methacrylate-ethyl acrylate copolymer and a graphene oxide dispersion into a solvent, adding an auxiliary agent, and uniformly mixing to obtain a toughening layer resin coating; and coating the toughening layer resin coating on the surface of the first color layer, and drying to evaporate the solvent to obtain the toughening layer.
In this embodiment, the coating layer is a metal aluminum layer or a dielectric layer; the aluminum value thickness of the metal aluminum layer is 300-500 angstrom meters; the dielectric layer is selected from one or more of zinc sulfide, magnesium fluoride, silicon dioxide and titanium dioxide, and the light transmittance of the dielectric layer is 82-92%.
The glue layer 5 is mainly used for transferring the alumite on the surface of the marker. In an alternative embodiment, the glue layer 5 is formed by mixing butadiene-acrylonitrile rubber modified phenolic resin, ketone-aldehyde resin and ethylene-vinyl acetate copolymer; the mass ratio of the butadiene-acrylonitrile rubber modified phenolic resin to the ketone-aldehyde resin to the ethylene-vinyl acetate copolymer is (5-8): (10-12): (5-8).
In one specific example, the formulation of the glue layer is:
5-8 parts of nitrile-butadiene rubber modified phenolic resin
10-12 parts of ketone-aldehyde resin
5-8 parts of ethylene-vinyl acetate copolymer
40-60 parts of solvent
And 2-3 parts of an auxiliary agent.
The solvent can be ethyl acetate or butanone; the auxiliary agent is fumed silica.
In the embodiment, the formula of each key component in the adhesive layer is regulated and controlled, so that the adhesive layer has the advantages of low softening point, uniform molecular weight, and good heat transfer and adhesive force; the softening point of the adhesive layer is 65-80 ℃, no reverse adhesion occurs in the process of the on-machine experiment, but a slight pocking mark phenomenon occurs (under the condition that the toughening layer is not arranged); this slight pocking phenomenon is effectively improved after the addition of the toughening layer in the image layer 3. The product defects caused by the insufficient performance of the glue layer are made up by regulating and controlling the structure of the image layer, and pockmarks or missing points in high-speed hot stamping are obviously improved.
Referring to fig. 3, the embodiment further provides a method for preparing the high-speed gold-stamping alumite, which includes the following steps:
s1, providing a base film layer, forming a release layer on the surface of the base film layer;
specifically, 1-2 parts of solvent wax is dissolved in toluene and butanone and uniformly dispersed, the mass ratio of the solvent wax to the toluene to the butanone is 1:10:5, the dispersion liquid is uniformly coated on the surface of a PET film, and the wet coating amount is 2.5 +/-0.5 g/m2Drying at 140 ℃ in a coating machine oven, and volatilizing the solvent to obtain the release layer.
S2, sequentially coating a first color layer, a toughening layer and a second color layer on the surface of the release layer, and forming microstructures on the surfaces of the first color layer, the toughening layer and the second color layer through mould pressing;
this first chromatograph, increase tough layer and second chromatograph constitute the image layer that has sandwich structure, set up between first chromatograph and second chromatograph increase tough layer is used for promoting the pliability on image layer, provides buffering thermal stress for first chromatograph and second chromatograph in the pressurized process that is heated at electrochemical aluminium.
Step one, preparing resin coatings corresponding to the first color layer and the second color layer:
adding 4-8 parts of cellulose acetate propionate, 6-12 parts of methyl methacrylate homopolymer and 0.2-0.4 part of auxiliary agent into 40-90 parts of solvent, and uniformly stirring to obtain a color layer resin coating; in an alternative embodiment, the color layer resin coating may further include 2 to 4 parts of toner. The solvent is butanone or ethyl acetate. The auxiliary agent is a defoaming agent and a leveling agent which mainly comprise modified siloxane.
Step two, preparing resin paint corresponding to the toughening layer:
adding 5-10 parts of methyl methacrylate-butyl methacrylate copolymer, 2-5 parts of methyl methacrylate-ethyl acrylate copolymer, 0.1-0.2 part of graphene oxide dispersion liquid and 0.2-0.4 part of auxiliary agent into 70-90 parts of solvent, and uniformly mixing to obtain the toughening layer resin coating.
In a specific example, the preparation process of the resin coating corresponding to the toughening layer is as follows:
1. preparing butanone dispersion of graphene oxide: and (2) oxidizing graphene: the butanone was mechanically stirred at 500-700rpm at 1:100 to obtain a dispersion after 30 minutes.
2. Preparation of toughening layer coating
(1) According to the formula of methyl methacrylate-butyl methacrylate copolymer: methyl methacrylate-ethyl acrylate copolymer: ethyl acetate: butanone: defoaming agent: leveling agent: weighing the components in a weight ratio of 7:3:50:30:0.1:0.1:0.1 in butanone dispersion of graphene oxide for later use;
(2) firstly, putting a solvent (ethyl acetate and butanone) into a reaction kettle, starting a stirring device, uniformly stirring, and heating to 50-60 ℃;
(3) putting resin (methyl methacrylate-butyl methacrylate copolymer and methyl methacrylate-ethyl acrylate copolymer) into a reaction kettle, and controlling the stirring speed to be 500-700rpm for 4-6 hours until the resin is completely dissolved;
(4) after the resin is completely dissolved, putting the butanone dispersion liquid of the graphene oxide into a reaction kettle, and stirring for about 30 minutes at a stirring speed of 800-1000 rpm until the auxiliary agent is uniformly dispersed;
(5) adding the auxiliary agent (the defoaming agent and the flatting agent) into a reaction kettle, and stirring for about 30 minutes at a stirring speed of 800-1000 rpm until the auxiliary agent is uniformly dispersed to obtain a crude product;
(6) and gradually cooling the reaction kettle to below 30 ℃ by controlling the stirring speed to be 200-400 rpm, and filtering to obtain the toughening layer resin coating.
Step three, forming a first color layer on the surface of the release layer
Uniformly coating the color layer resin coating on the surface of the release layer, wherein the dry coating amount after coating is 0.6 +/-0.1 g/m2And drying at the temperature of 155-165 ℃ in a coating machine oven to obtain a first color layer.
Step four, forming a toughening layer on the surface of the first color layer
Uniformly coating the resin coating of the toughening layer on the surface of the dried first color layer, wherein the dry coating amount after coating is 0.3 +/-0.1 g/m2155 ℃ in a coating machine ovenAnd drying to obtain the toughening layer.
Step five, forming a second color layer on the surface of the toughening layer
Uniformly coating the color layer resin coating on the surface of the toughening layer, wherein the dry coating amount after coating is 0.6 +/-0.1 g/m2And dried at 155-165 ℃ to obtain a second color layer.
Sixthly, forming holographic anti-counterfeiting patterns on the first color layer, the toughening layer and the second color layer
In this embodiment, a concave-convex imprinting process is used to stamp out a microstructure corresponding to the holographic anti-counterfeit pattern on the image layer formed by the first color layer, the toughening layer and the second color layer.
S3, forming a coating layer on the surface of the second color layer, and forming and displaying a holographic pattern by the microstructure under the action of the coating layer;
after the coating layer is formed, the surface microstructure of the second color layer is attached by the metal of the coating layer and has metal luster to enhance brightness, so that the holographic pattern is displayed.
In the embodiment, a coating layer is formed on the surface of the second color layer by vacuum aluminum plating or ZnS medium; the thickness of the coating layer is 300-500 angstrom.
S4, forming a glue layer on the surface of the coating layer.
Firstly, preparing resin paint corresponding to an adhesive layer: adding 5-8 parts of nitrile rubber modified phenolic resin, 10-12 parts of ketone-aldehyde resin, 5-8 parts of ethylene-vinyl acetate copolymer and 2-3 parts of auxiliary agent into 40-60 parts of solvent, and uniformly mixing to obtain the resin coating corresponding to the glue layer. Then coating the resin coating on the surface of a coating layer, wherein the dry coating amount after coating is 1.3 +/-0.2 g/m2And dried at 130-140 ℃. The softening point of the glue layer is 65-80 ℃.
In the preparation process, if no toner is added in the first color layer and the second color layer, the finally prepared silver transparent holographic anti-counterfeiting electrochemical aluminum is obtained; if the first color layer and the second color layer are added with toner, the finally obtained transparent holographic anti-counterfeiting electrochemical aluminum is colored, and the color presented by the electrochemical aluminum depends on the color of the added toner. The transparent holographic anti-counterfeiting electrochemical aluminum can be used for gold stamping on a high-speed gold stamping machine with the speed of 110 m/min.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the utility model, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The alumite capable of being gilded at high speed comprises a base film layer, a release layer, an image layer, a coating layer and a glue layer, and is characterized in that the image layer comprises a first color layer, a toughening layer and a second color layer which are sequentially stacked;
one side of the first color layer, the toughening layer and the second color layer, which is close to the film coating layer, is provided with a microstructure capable of displaying holographic patterns under the action of the film coating layer;
this first chromatograph, toughening layer and second chromatograph constitute the image layer that has the sandwich structure, set up between first chromatograph and second chromatograph toughening layer is used for promoting the pliability on image layer, provides buffering thermal stress for first chromatograph and second chromatograph in the pressurized process that is heated at electrochemical aluminium.
2. The high-speed gildable electrochemical aluminum as set forth in claim 1 wherein the thickness ratio of the first color layer, the toughening layer and the second color layer is (1.5-2.5) 1: (1.5-2.5).
3. The alumite capable of being gilded at high speed according to claim 1 or 2, wherein the coating layer is a metal aluminum layer or a dielectric layer;
the thickness value of the metal aluminum layer is 300-500 angstrom meters.
4. The high-speed gildable electrochemical aluminum as set forth in claim 1 or 2, wherein a peel value of the base film layer from the release layer, the image layer, the plating layer and the glue layer at the time of separation is 2.4 to 4N/m.
5. The alumite capable of being subjected to high-speed gold stamping according to claim 1 or 2, wherein the base film layer is a PET (polyethylene terephthalate) film with the thickness of 12-18 μm.
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| CN114312093A (en) * | 2022-01-11 | 2022-04-12 | 武汉华工图像技术开发有限公司 | Electrochemical aluminum capable of high-speed gold stamping and preparation method thereof |
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| CN114312093A (en) * | 2022-01-11 | 2022-04-12 | 武汉华工图像技术开发有限公司 | Electrochemical aluminum capable of high-speed gold stamping and preparation method thereof |
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